Sundial



CJD. LOVE.

APPHCAIION FILED OCT- 27. I920- Patentd Nov. 15, 1921 2 SHEETS SHEET IImam c. I LOVE.

SUNDIAL. APPHCATION FILE" OCT- 27, I920.

Patented Nov. 15, 1921.

2 SHEETS-SHEET 2.

which UNITED STATES CLYDE nLovE] or cosnooroiv, omo.

SUNDIAL.

Specification of Letters Patent.

Patented Nov. 15, 1921.

Application filed October 27, 1920. Serial No. 420,025.

To all whom it may concern Be it known that I, CLYDE D. LOVE 9. citizenof the United States, residing at oshocton, in the county of Coshoctonand State of Ohlo, have invented certain new and useful Improvements inSundials, of which the following is a specification.

The present invention relates to certain new and useful improvements insun dials, and has for its object to provide a device of this characterwhich embodies novel features of construction whereby it can be readilyadjusted for different longitudes to compensate for the equation of timeand givea reading in standard time instead of sun time.

Further objects of the invention are to provide a device of thischaracter which is comparatively simple and inexpensive in itsconstruction, which can be easily and quickly adjusted and locked orreleased from the front of the dial without the necessity of.

reaching aroundito the back thereof, and which is susceptible of beingmade in embodiments adapted for use for advertising purposes.

With these and other objects in view the invention consists in certaincombinations, arran ements, and associations of the parts, as will morefully appear as the descri tion proceeds, the novel features thereofpointedout in the appended laims.

For a fullunderstandingjof the invention reference is to be had to thefollowing dep, scription and accompanying drawings, in

Figure 1 is a front elevation of a Sundial which is constructed inaccordance with the invention; l y

Fig. 2 is a vertical sectional view through the same on the line 2-2 ofFig. 1;

Fig. 3 is a detail view of the lower end of the gnomon; p

, Fig. 4 is a rear elevation of the sun dial;

Fig. 5 is a vertical sectional view through a modified form of the sundial; and t Fig. 6 is a-detail view of the adjustable; mounting for thedial in the said modlfied form. 1 v Corresponding and like parts arereferred to in thefollowing description and indicated in .all.of theviews of the drawings by like reference characters. y p

The sun dial may obviously beconstructed for mounting in either avertical. horizontal 56 or. angular position, although for illustrativepurposes two embodiments of the invention are shown which are verticallydisposed. In the preferred form of the invention. illustrated by Figs. 1to 4 inclusive, the nu meral 1 designates the base and 2 the dial whichis carried by the base and adjustably mounted in a spaced relationthereto. The base 1 preferably has an elongated format1on, beingprovided at its extremities with openings 3 arranged to receive screwsor other fastening members for securing the base to a vertical support,which support should face due soutl. The dial 2 may be convenientlyformed of some light material such as sheet metal, and is illustratedbeing clrcular in shape and surrounded by a peripheral flange 4 which isbent rearwardlv from the edges thereof. A stiffening plate 5 is shown assecured to the back of the dial 2 atsubstantially the central portionthereof, and an angularly shaped bracket 6 is secured to the reinforcedportion of the dial.

.A. complemental bracket 7 is secured to the .dial is set up inoperative position. The pivot "bolt 8 which forms the. axis about whichthe dial is turned whileadjusting the same is exactly parallel to theshadow casting edge 1.0 of the gnomon, and the bearing faces of theoutstanding wings 6 and 7* of the brackets 6 and 7 are arranged at rightangles to the said bolt 8 and shadow casting edge of the gnomon.

The gnomon is detachably secured to the dial, being constructed at theinner end thereof witlra lateralflauge 11 which fits securely againstthe face of the dial andis formedwith a positioning stud12 and anopening 13. This stud 12 is adapted to pass through correspondingopenings in theqdial 2 and stiffening plate 5, and the opening 13 isadapted to register withflother openings in the dialand stiffening plateand to, receive one of the fastening members or bolts 14 by means ofwhich the stiffening plate is secured to the dial. The gnomon is thusaccurately and rigidlysecured in place upon the dial by the use of onlya single fastening member, and this is a feature which is an advantagewhen knocking down and packing the sun dials for shipment, as well aswhen assembling them in the shop or field.

The face of the dial 2 is provided with the usual hour scale 15 which isgraduated and marked in the proper manner forcooperation with the shadowcast by the gnomon to indicate the time either in the morning or in theafternoon. If desired, the face of the dial may also carry suitableadvertising matter such as that indicated at 16. The sun dial is mountedin position so as to face due south. The gnomonmust then be in theplane'of the meridian and the shadow casting edge 10 thereof must be atsuch an angle that it is exactly parallel with the axis of the earth. Inthis position the sun I sun dial may be in'standard time instead of suntime. The ad ustment must be made,

however, without destroying the parallel relation between the shadowcasting edge of the gnomon and the axis of the earth. It is accordinglyimportant that the axis upon the gnomon. In the construction illustratedby Figs. 1 to 4 of the drawings the pivot bolt 8 is parallel to theshadow casting edge of the gnomon while the bearing faces of thebrackets 6 and 7 are at'right angles thereto. The dialcanthusbe turnedupon the pivot .bolt and properly positioned to compensate wing nut isarranged in front of the dial 2 and provides a means for easilyreleasing the bolt or. tightening the sameipreparatory to or aftermakingan adjustment. I

A possible modification is illustrated by Figs. 5 and 6 in which thebase l has a tongue 19 stamped therefrom and bent upwardly to provideone of the pivot brackets. In a similar manner the dial2 has a tongue 20stamped therefrom and bent rearwardly to form the other, bracket. 'Thepivot bolt 21 extends through the brackets 19 and 20 and is providedwith a clamping nut 22 which partially projects through the open ing inthe dial from which the tongue 20 was cut, thereby enablingflthe nut tobe readily manipulated from-the front of the dial. This pivot bolt 21has a tubular formation and is interiorly threaded to receive the'innerend of the gnomon 23, said gnomon being in the form of a rod. This gno-.have been shown and described for illustrative purposes, it will beobvious that many modifications and changes can be made in the detailsof construction without departing from the spirit or scope of theinvention.

Having thus described my l1lVC11blOl1,\Vlli1t I claim as new and desireto secure by Letters Patent, is

1. A sun dial including a gnoinon, a. sul stantially flat dialassociated therewith. and a pivot bolt upon which the dial is adjustablymounted, the axis of the pivot bolt being parallel to the shadow castingedge of the gnomon.

2. A sun dial including a gnomon, a dial associated therewith andpivotally mounted to swing upon an axis having the same direction as theshadow casting edge of the gnomon, and clamping means for holding thedial in an adjusted position, said clamping means being arranged to bemanipulated from the front of the dial. 7

8. A sun dial including a gnomon, a dial associated therewith, a supportarranged back of the dial and upon which the dial is pivotally mountedto turn about an axis parallel to the shadow casting edge of the gnomon,and clamping means adjustable from the front of the dial for holding thedial in an adjusted position.

4. A sun dial including a base, a dial, a gnomon associated with thedial, complemental pivot ears projecting from the dial and base, and apivot .bolt connected to the pivot ears, the bolt being parallel to theshadow casting edge of the gnomon while the bearing faces of the pivotears are arranged at right angles thereto.

5. A sun dial including a base, a dial having an opening in the facethereof, a gnomon associated with the dial, complemental, pivot earsprojecting from .the dial and base, a pivot bolt connecting the pivotears and arranged parallel to the shadow casting edge of the gnomon, anda clamping nut upon the bolt for holding the dial in an. adjustedposition, said clamping nut projecting through the before-mentionedopening in the face of the dial so as to be accessible from the frontthereof.

6. A sun dial including a base, a dial having an opening in the facethereof, a gnoinon associated with the dial, complemental pivot 4earsprojecting from the base and dial, a

pivot bolt connecting the ears and arranged parallel to the shadowcasting edge of the gnomon, said pivot bolt extending through thebefore-mentioned opening in the face of the dial, a clamping nut appliedto the bolt, and a sleeve inter osed between the clampin nut and thepivot ears.

A sun'dial including a dial plate having openings in the face thereof, agnomon provided at the base thereof with a flange adapted to fit againstthe dial, said flange being provided with a positioning pin and anopening and the positioning pin being adapted to engage one of theopenings of the dial plate while the opening is adapted to register withanother opening of the dial plate, and a detachable fastening memberextending through the registering openings.

In testimony whereof I affix my signature.

CLYDE D. LOVE.

